The camshaft sensor should be located near stator. Look at the service manual, it can be called several names, trigger coil, pulsar, etc.
You must test and eliminate each component separately before buying new parts. You will need a service manual and multimeter for testing.
Most of the time, the problem will be small, generally a short on the ground side of the circuit due to corrosion or loose wire.
The problem will require resistance, voltage drop, and continuity testing.
You must be methodical and pay strict attention to detail